Auto Detaling Solutions (ADS ) sells a 12 oz sampler for $9.95. Looking at their website this morning I see that Meguiars will soon offer a 16 oz bottle of #21...yippee! Also, ADS has the 64 oz bottle on sale for $34.99 (or 54.7 cents/oz).

1999 Contour SVT #1966/2760, Silver Frost/Midnight Blue Koni Kit, Mille Miglia MM-S rims, B&M shifter, Stazi mesh, SFCs, optimized Y-pipe & TB, SS break lines, K&N drop-in, Infinity Kappa speakers, MTX amp/sub